2018版OCP 11g 052最新考试题库整理（带答案）（16）

16、Which two events always request the LGWR to write?

A) when LGWR is notified by a server process that performs a Commit or ROLLBACK

B) When PMON restarts a server process

C) when DBWn writes dirty buffers

D) when a log switch occurs

E) when a checkpoint occurs

Answer:CD

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